What works to help community college students progress academically? This brief synthesizes 20 years of rigorous research by MDRC, presenting new evidence about key attributes of community college interventions that are positively related to larger impacts on students' academic progress. Findings: Findings are based on a synthesis of evidence from…

Multisite trials, which are being used with increasing frequency in education and evaluation research, provide an exciting opportunity for learning about how the effects of interventions or programs are distributed across sites. In particular, these studies can produce rigorous estimates of a cross-site mean effect of program assignment…

The benefits of understanding variation apply on multiple levels. Local policymakers and practitioners need to know both the average impact of an intervention and its variation across settings to properly assess its likely benefits and risks for their jurisdictions. For social scientists, cross-site impact variation offers opportunities to learn…

The present article provides a synthesis of the conceptual and statistical issues involved in using multisite randomized trials to learn about and from a distribution of heterogeneous program impacts across individuals and/or program sites. Learning "about" such a distribution involves estimating its mean value, detecting and quantifying…

In this article, the author shares his comments on statistical analysis for multisite trials, and focuses on the contribution of Stephen Raudenbush, Sean Reardon, and Takako Nomi to future research. Raudenbush, Reardon, and Nomi provide a major contribution to future research on variation in program impacts by showing how to use multisite trials…

The present paper, which is intended for a diverse audience of evaluation researchers, applied social scientists, and research funders, provides a broad overview of the conceptual and statistical issues involved in using multisite randomized trials to learn "about" and "from" variation in program effects across…

This paper uses data from the Head Start Impact Study (HSIS), a nationally representative multisite randomized trial, to quantify variation in effects of Head Start during 2002-2003 on children's cognitive and socio-emotional outcomes relative to the effects of other local alternatives, including parent care. We find that (1) treatment and control…

This executive summary describes results of the "Reading First Impact Study: Interim Report." The report presents preliminary findings from the Reading First Impact Study, a congressionally mandated evaluation of the federal government initiative to help all children read at or above grade level by the end of third grade. The No Child…

This report presents preliminary findings from the Reading First Impact Study, a congressionally mandated evaluation of the federal government initiative to help all children read at or above grade level by the end of third grade. The No Child Left Behind Act of 2001 (NCLB) established Reading First and mandated its evaluation. This document is…

Participants in Comprehensive Employment and Training Act-sponsored classroom training, on the job-training, and subsidized work experience were compared to a Current Population Survey sample. Female participants in all types of training had increased earnings (primarily due to increased employment), while males did not. (GDC)

This monograph presents results from a study of the Texas Worker Adjustment Demonstration, a 2,192-person randomized experimental evaluation of reemployment programs for displaced workers conducted at three Texas sites during 1984-85. It describes in detail: (1) the background, design, conduct, and content of the programs at each demonstration…

Head Start is the largest publicly funded preschool program in the U.S., and one of its primary goals is to improve the school readiness of low-income children. As has been widely reported, the first randomized trial of Head Start in the program's history found some evidence that it is achieving this goal. Receiving one year of Head Start had…

This paper poses a question of direct relevance for welfare administrators, program operators, and policy makers: What management practices, program strategies, and local conditions are key to running effective welfare-to-work programs? To address this question, the present analysis links detailed measures of program characteristics to valid and…

In preparation for the scheduled expiration of the Comprehensive Employment and Training Act (CETA) legislation at the end of fiscal year 1982, background information was gathered to analyze the effects of CETA training on participants' post-program earnings. An analysis was made of information gathered on persons over 24-years-old who entered a…

This paper addresses the question: How does implementation influence the effectiveness of mandatory welfare-to-work programs? Data from three large-scale, multi-site random assignment experiments were pooled; quantitative measures of program implementation were constructed; and multilevel statistical modeling was used to examine the relationship…